The effects of pH and PEG 400-water cosolvents on oxytetracycline-magnesium complex formation and stability.


The effects of pH and PEG 400 on the stoichiometry, conformation, and stability of the magnesium-oxytetracycline (Mg+2-OTC) complex were evaluated. Circular dichroism (CD) and HPLC were used to investigate Mg+2-OTC complex formation and determine the stability of the complexes formed. The stoichiometry of the complex was determined to be a 1:1 molar ratio… (More)


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